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Poromitra crassiceps

Karen Osborne, Smithsonian Institution

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Idiacanthus antrostomus

Karen Osborne, Smithsonian Institution

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Idiacanthus antrostomus

Karen Osborne, Smithsonian Institution

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Idiacanthus antrostomus

Karen Osborne, Smithsonian Institution

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Anoplogaster cornuta 

Karen Osborne, Smithsonian Institution

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Juvenile comb jellies (indicated with red arrows) can be seen inside the auricles of an adult collected from Kiel Fjord in 2008. Jellies use their auricles to help draw in prey.

Jamileh Javidpour

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Adult warty comb jellies (Mnemiopsis ledyi) feast on their young after large summer population booms deplete their food, a new study finds. Cannibalism may help the animals last through the winter when there’s little to eat.  

Bruno C. Vellutini/Wikimedia Commons (CC BY-SA 3.0)

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OceanX and Photographer Paul Caiger Showing the Many Faces of the Ocean Twilight Zone. 

@oceanx @paulcaiger 

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Deep Sea Dragonfish

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Melanocetidae (Larval female anglerfish) 

by Dante Fenolio

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(source)

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Histioteuthis bonnellii. (Jewel squid)

Credit: David Shale/MAR-ECO, Census of Marine Life

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Tomopteris carpenter. (Striped deep sea worm)

Credit: © Hauke Flores, AWI

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Phronima

Credit: © David Shale

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Neolithodes sp. (Spiny Deepsea King Crab)

Credit: © David Shale

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Leachia sp. (Cuckatoo squid)

Credit: Marsh Youngbluth/MAR-ECO, Census of Marine Life